PlayVital White Ergonomic Thumb Grips for PS5, PS4, Xbox Series X/S, Xbox One, Switch Pro Controller - 3 Height Adjustable Convex & Concave Caps with Diamond Texture & Bomb Design - Improve Gaming Comfort & Reduce Fatigue for Long Play Sessions

I've literally only just tested applying them (I only have 3rd party controllers, so I wanted to make sure they'd even work --- FWIW: I tried them on a Flydigi Vader stick (they all use the same sticks), a Gamesir T4K (I *think* Gamesir sticks all have the same domes), and a Thunderobot G50S).As many other reviewers have said, they CAN be very tricky to get on, but once I realized exactly how I was supposed to bend it back, it was then easy to pop them on & have it close around the dome of the stick. This may be uncommon, but personally I notice when I move an analog stick around (especially at full extension in any direction), I tend to actually push it from the edge of the dome in the direction I want it to go (as opposed to putting my thumb on the top of the stick & directing it with the tip of my thumb). Maybe I'm just not precise with my control, lol. That's where the "so far" comes in, because during testing I found that if I put enough pressure on it from the side, it slipped off VERY easily (though, while moving it by touching the top, it was fine. I should also specify that this was from the literal side of the tall-cap. Putting my thumb on the edge of the rim, "pushing" down & in the direction I wanted, I could get fairly wild with the stick and it would be fine). Now, I acknowledge testing a controller without a game often results in more aggressive movements that you might not actually achieve during gameplay. (Also, I should note that it stayed on best with the Gamesir, which has the roughest texture along the rim of the dome, of my 3 controllers).I'll also say I went with the Quantum Black. Both because they claimed to be more matte, and because I was unsure of what texture pattern I'd like best, and these ones (at least the 4 concave caps) have a "very similar" pattern to the best seller offered by who is probably the industry leader in thumbstick caps (& if that many people like galaxy, it's probably good - honestly, that was the deciding factor between these & some from a reptilian competitor). What I liked though, was that these PlayVital ones are (allegedly) universal, and it gave many options for size & concave/convex. For someone like me who is new to using them, I wasn't sure what height or shape I'd like best (meanwhile I'd have to have paid $4 more for only 2 caps, usually 2 different sizes (so I can't leave them on multiple controllers), from the other provider). Especially because while I thought "hell yea, get that aiming stick as tall as possible!!", after the brief testing, I wouldn't be shocked if that's too tall (for an extended period of play), for my shorter fingers (which could also explain why I do the rim-pushing method sometimes), and I wind up using the medium instead.Overall, I'd say this is a very good buy & I'd recommend them for anyone who is new to thumbstick caps.